docs: def maneuvers(self):
          """list of :py:class:`~beyond.orbits.man.Maneuver`: Maneuver descriptions usable by the
          propagator. Not all propagators can handle maneuvers. Check their respective documentations
          for more details.
          """
          mans = self.complements.setdefault('maneuvers', [])
  
          if isinstance(mans, Maneuver):
              mans = [mans]
              self.complements['maneuvers'] = mans
  
          return mans